/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "GeneratedJNIWrappers.h"
#include "GeneratedJNINatives.h"
#include "nsThreadUtils.h"
#include "mozilla/dom/Gamepad.h"

namespace mozilla {
namespace dom {

class AndroidGamepadManager final
  : public java::AndroidGamepadManager::Natives<AndroidGamepadManager>
{
  AndroidGamepadManager() = delete;

public:
  static void
  OnGamepadChange(int32_t aID, bool aAdded)
  {
    RefPtr<GamepadPlatformService> service =
        GamepadPlatformService::GetParentService();
    if (!service) {
      return;
    }

    if (aAdded) {
      const int svc_id = service->AddGamepad(
          "android", GamepadMappingType::Standard,
          kStandardGamepadButtons, kStandardGamepadAxes);
      java::AndroidGamepadManager::OnGamepadAdded(aID, svc_id);

    } else {
      service->RemoveGamepad(aID);
    }
  }

  static void
  OnButtonChange(int32_t aID, int32_t aButton, bool aPressed, float aValue)
  {
    RefPtr<GamepadPlatformService> service =
        GamepadPlatformService::GetParentService();
    if (!service) {
      return;
    }

    service->NewButtonEvent(aID, aButton, aPressed, aValue);
  }

  static void
  OnAxisChange(int32_t aID, jni::BooleanArray::Param aValid,
               jni::FloatArray::Param aValues)
  {
    RefPtr<GamepadPlatformService> service =
        GamepadPlatformService::GetParentService();
    if (!service) {
      return;
    }

    const auto& valid = aValid->GetElements();
    const auto& values = aValues->GetElements();
    MOZ_ASSERT(valid.Length() == values.Length());

    for (size_t i = 0; i < values.Length(); i++) {
      service->NewAxisMoveEvent(aID, i, values[i]);
    }
  }
};

void StartGamepadMonitoring()
{
  AndroidGamepadManager::Init();
  java::AndroidGamepadManager::Start();
}

void StopGamepadMonitoring()
{
  java::AndroidGamepadManager::Stop();
}

} // namespace dom
} // namespace mozilla
